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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
REF2L100
REF2L100
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Miami Breaker
100
600
REF2L100L
REF2L100L
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From
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Miami Breaker
100
600
REF3A003L
REF3A003L
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From
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Miami Breaker
3
600
REF3A005L
REF3A005L
Limited Stock
From
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Miami Breaker
5
600
REF3A010L
REF3A010L
Limited Stock
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Miami Breaker
10
600
REF3A015
REF3A015
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Miami Breaker
15
600
REF3A015L
REF3A015L
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Miami Breaker
15
600
REF3A020
REF3A020
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Miami Breaker
20
600
REF3A020L
REF3A020L
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Miami Breaker
20
600
REF3A025
REF3A025
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Miami Breaker
25
600
REF3A025L
REF3A025L
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Miami Breaker
25
600
REF3A030
REF3A030
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Miami Breaker
30
600
REF3A030L
REF3A030L
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Miami Breaker
30
600
REF3A035
REF3A035
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Miami Breaker
35
600
REF3A035L
REF3A035L
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Miami Breaker
35
600
REF3A040
REF3A040
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Miami Breaker
40
600
REF3A040L
REF3A040L
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Miami Breaker
40
600
REF3A045
REF3A045
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Miami Breaker
45
600
REF3A045L
REF3A045L
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Miami Breaker
45
600
REF3A050
REF3A050
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Miami Breaker
50
600
REF3A050L
REF3A050L
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Miami Breaker
50
600
REF3A060
REF3A060
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From
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Miami Breaker
60
600
REF3A060L
REF3A060L
Limited Stock
From
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Miami Breaker
60
600
REF3A070
REF3A070
Limited Stock
From
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Miami Breaker
70
600
Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.


Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.